Table 2 

Estimated exponential rates associated with replacement turnovers of different TFBSs 

TFBS 
Promoter 
λ_{mean} 
λ_{median} 


E2F 
Simulated 
0.0832 
0.0724 
E2F 
Real 
0.0833 
0.0756 
MycMax 
Simulated 
0.2200 
0.2293 
NFκB 
Simulated 
0.1032 
0.0918 


The probability of replacement turnover in evolution can be predicted by an exponential cumulative distribution function of divergence distance: RTR = 1  Exp (λ × d). λ_{mean }and λ_{median }are estimated rates for mean and median values, respectively. 

Huang et al. Genome Biology 2007 8:R225 doi:10.1186/gb2007810r225 